Structure made of 19mm thick ply-board with melamine lamination. Work bench of perforated stainless steel. Front acrylic door with two holes provided with cloth sleeves. Properly balanced blowers fitted on1/4 H.P. electric motor provided on the top portion to supply sufficient air to HEPA filter. One HEPA filter provided on top of work bench horizontally to supply clean air to the work bench vertically. Another HEPA Filter provided on side for exhaust system. Efficiency of HEPA filters 99.97%, particle retention >0.3 micron. One Pre-filter provided on the top to supply pre filtered air to the blowers. One fluorescent tube and one U.V. germicidal tube provided over work bench. Static pressure manometer fitted. Cock for Gas or air & vacuum line. Ground level screw (4No.) fitted. Back cover fixed with screws for convenient removal for attending blowers, filters and motor when needed. Cabinet fitted with exhaust and virus burnt system.